Foil handling mechanism for stamping machines



Jan. 20, 1953 L. A. KINGSLEY 2,625,763

FOIL. HANDLING MECHANISM FOR STAMPING MACHINES Filed Oct. 17. 1949 2 SHEETSSHEET 1 III'IITnIn IN V EN TOR. 45/105 4. flnve-sziy firraemgrs.

Jan. 20, 1953 L. A. KINGSLEY 2,625,763

FOIL. HANDLING MECHANISM FOR STAMPING MACHINES Filed 061;. 17. 1949 2 SHEETS-SHEET 2 IN VEN TOR. 10 levy/5 4. Knve-azy 40 m4. fi k firromvsrs.

Patented Jan. 20, 1953 UNITED STATES PATENT comer:

FOIL HANDLING MECHANISM FOR STAMPING MACHINES- Lewis A. Kingsley, Los Angeles, Calif.

Application October- 17, 1949, Serial No. 121,690

. 6 Claims. 1

My invention relates to foil handling mechanism for stamping machines, and included in the objects of my invention are First, to provide a foil handling mechanism which operates in conjunction with movement of a stamping machine die plunger to advance stamping foil across or transverse to the work.

Second, to provide a foil handling mechanism which engages and acts upon the used portion of the foil so as to minimize the handling of the fold, the collector being so arranged that the used foil may be removed from time to time without interference with operation of the machine or necessarily of rethreading the foil therethrough.

Fourth, to provide a foil handling mechanism which incorporates novelly arranged guide means adapted to be quickly set to handle foil of different widths.

Fifth, to provide a foil feeding mechanism which employs a special quickly adjustable means for regulating the feed rate of the foil.

With the above and other objects in view as may appear hereinafter, reference is made to the accompanying drawings, in which:

Figure 1 is a perspective view of a foil stamping machine incorporating my handling mechanism.

Figure 2 is an enlarged fragmentary side view showing my handling mechanism and adjacent portions of the machine with the stamping head of the machine in its upper position.

Figure 3 is a similar fragmentary side view showing the stamping head in its lower position and with portions of the machine shown in section.

Figure 4 is a front view of the foil stamping machine showing my handling apparatus, the parts being in position corresponding to Figure 2, and with portions shown in section.

Figure 5 is an enlarged fragmentary sectional view through 5-5 of Figure 4.

Figure 6 is a fragmentary elevational view taken from the plane 66 of Figure 2.

' The stamping machine for which my apparatus is an attachment includes a platform I on which is mounted a table 2 which carries an integral gooseneck member 3. The member 3 curves upwardly and over the table 2; Mounted in its extremity for movement perpendicular to the table 2 is a plunger 4. The plunger is provided with a rack 5 driven by a pinion 6 which in turn is operated by a hand lever l. Secured to the lower end of the plunger 4 is a stamping head 8. Springs 9 are attached to the stamping head and to the sides of the member. The stamping head is adapted to receive interchangeably a stamping die I0. For some operations the stamping head is heated.

Mounted on the forward side of the plunger 4 adjacent the head 8 is a U-bracket I! having outwardly laterally directed legs which carry upright-end plates l2. Mounted between the end plates I2 is a feed roller shaft l3 having a knob M at one end for manual turning. Mounted on the shaft I3 is a feed roller I5. The end of the shaft opposite from the knob l4 journals a cam plate 16 which is urged in a counterclockwise direction as viewed in Figures 2 and 3 by means of a torsion spring I! shown best in Figures 1 and 4. A stop l8 limits movement of the cam plate. The shaft I3 protrudes through the cam plate l6 and is provided with a ratchet wheel [9 engageable by a pawl 20 carried by the cam plate [6 and so positioned as to effect counterclockwise movement of the ratchet end shaft as viewed in Figures 2 and 3.

Mounted at the extremity of the gooseneck member 3 is a bracket 2| having a laterally directed portion in which is provided a vertical slot. Adjustably secured to the bracket 2! is an arm 22 having a depending portion which carries a cam engaging roller 23, so disposed as to engage the cam plate I6 when the plunger 4 and stamping head 8 are raised from the position shown in Figure 3, to the position shown in Figure 2. The arm 22 is secured in place by means of a thumb screw 24 which extends through the slot provided in the bracket 2|.

Mounted below and slightly forwardly of the feed roller I5 is a foil guide shaft 25 having a knob 26 at one end to permit manual rotation. A friction means 2'! involving a'friction washer and compression spring is employed to hold the shaft in any position to which it may be moved. A similar friction means 28 is provided at the knob end of the feed roller shaft l3.

The foil guide shaft 25 is provided with several (in this case three) sets of guide pins 29, which may be selectively positioned so as to extend into corresponding grooves 30 provided in the feed roller I5.

Mounted above the feed roller I5 is a tension roller 3|.

The tension roller 3i is journaled on a shaft 32 which protrudes through the end plates 12. The extremities of the shaft 32 are provided with upright pins 33 which extend through guide lugs 34 bent outwardly from the end plates l2. Springs 35 are positioned on the pins 33 between the lugs 34 and the shaft 32, and function to maintain a predetermined pressure between the tension roller 3! and feed roller l5.

A scroll plate 36 provided with anchor bars 31 and 38 at its extremities is so mounted that one of the anchor bars 3'! is located immediately behind the feed roller 15, the other end of the scroll plate is anchored by the bar 38 located adjacent the upward margins of the end plates I2 rearwardly of and above the tension roller 3|. Between the two anchor bars, the scroll plate curves to form a spiral open between. the anchor bars 31 and 38.

Located at the rear extremity of the table 2 adjacent the base end of the gooseneck member 3 is a foil reel 39. Forwardly of the foil reel is a depressor bar 40 supported by an arm 4|.

Operation of my foil handling mechanism is as follows:

An extremity A of a roll of foil is threaded from the reel 39 under the arm 4|, over the stamping head 8, then upwardly, so as to pass over the foil guide shaft 25, the foil then continues forwardly and upwardly around the feed roller 15 and under the tension roller 3|, terminating with its extremity directed into the scroll plate 36. Rolls of foil of different widths may be employed. The guide pins 29 are so positioned as to correspond to the various widths of foil. The appropriate set of pins is turned so as to fit in corresponding grooves in the feed roller.

The scroll plate 36 eliminates the need of a reel to receive the used end of the foil. The raw used end is allowed to curl r fold Within the scroll plate. When the space therein becomes filled, it is merely necessary to reach into the end of the scroll plate and tear or pull the foil therefrom.

Having fully described my invention, it is to be understood that I do not wish to be limited to the details herein set forth, but my invention is of the full scope of the appended. claims.

I claim:

1. The combination with a foil stamping machine having a reciprocable stamping head and a foil reel from which foil ribbon may be withdrawn across said stamping head, of a foil handling means, involving: a foil feeding means carried by said stamping head and adapted tov receive an end of a ribbon of foil, said feeding means including devices responsive to reciprocation of said stamping head to advance said ribbon of foil in predetermined increments; and an open end scroll disposed adjacent the discharge side of said feeding means to receive the free. end of said foil as it issues from said feeding means, said scroll being of such dimensions as to receive ones fingers whereby the foil contained in said scroll may be torn free and removed from time to time endwise from said scroll.

2. The combination with a foil stamping machine having a reciprocable stamping head and a foil reel from which foil ribbon may be withdrawn across said stamping head, of a foil handling means, involving: a foil feeding means carried by said stamping head, said means including a feed roller, ratchet, and pawl means for advancing said feed roller in predetermined increments upon reciprocation of said stamping 4 head; and an open end scroll disposed adjacent the discharge side of said feeding means to receive the free end of said foil as it issues from said feeding means, said scroll being of such dimensions as to receive ones fingers whereby the foil contained in said scroll may be torn free and removed from time to time endwise from said scroll.

3. The combination with a foil stamping machine having a: reciprocable stamping head and a foil reel from which foil ribbon may be withdrawn across said stamping head, of a foil handling means, involving: a foil feeding means carried by said stamping head, said means including a feed roller, means operable by reciprocation of said stamping head for advancing said feed roller, adjustable guide means associated with said roller to accommodate different widths of foil ribbon and a spring loaded idler roller engaging said feed roller; and a foil ribbon receiver in the form of a plate bent to form an open end scroll disposed adjacent the discharged side of said foil feeding means adapted to receive the end of said foil ribbon and collect said foil ribbon as it issues from said feed roller, said scroll being of such dimensions as to receive ones fingers whereby the foil contained in said scroll may be torn free and removed from time to time endwise from said scroll.

4. The combination with a foil stamping machine having a reciprocable stamping head and a foil reel from which foil ribbon may be withdrawn across said stamping head, of a foil handling means, involving: a foil feeding means carried by said stamping head, said means including a feed roller having sets of grooves, a shaft carrying sets of radial pins adapted to be selectively positioned in said grooves to define with said roller slits of various widths to admit foil ribbon of corresponding Widths, and means responsive to reciprocation of said stamping head for advancing said feed roller.

5. The combination with a foil stamping machine having areciprocable stamping head and a foil reel from which foil ribbon may be withdrawn across said stamping head, of a foil handling means, involving: a foil feeding means carried by said stamping head, said means in-- cluding a feed roller having sets of grooves, a shaftcarrying sets of radial pins adapted to be selectively positioned in said grooves to define with said roller slits of various widths to admit foil ribbon of corresponding widths, and means responsive to reciprocation of said stamping head for advancing said feed roller; and a foil ribbon receiver in the form of a plate bent to form an open end scroll adapted to receive the end of said foil ribbon and collect said foil ribbon as it issues from said feed roller.

6. The combination with a foil stamping machine having a reciprocable stamping head and a foil reel from which foil ribbon may be withdrawn across said stamping head, of a foil handling means, involving: a foil feeding mechanism carried by said stamping head and including roller means to receive a ribbon of foil, a ratchet and pawl means to advance said roller means; a cam plate having an upwardly directed cam edge of spiral contour and arranged to carry said pawl means;v a bracket mounted on a fixed part of said stamping machine and including a cam actuator engagea-ble with said cam edge as said stamping head approaches the upper end of. its reciprocation to effect partial rotation of said. cam plate and cause. said pawl to advance saidlratchet and feed said roller means, said bracket being adjustable to alter the extent of rotation of said cam plate thereby to vary the feed of said roller means; said roller means having sets of grooves; a shaft carrying sets of radial pins adapted to be selectively positioned in said grooves to define with said roller means slits of various widths to admit foil ribbon of corresponding Widths.

LEWIS A. KINGSLEY.

REFERENCES CITED The following references are of record in the file of this patent:

Number 6 UNITED STATES PATENTS Name Date Littlefield Oct. 9, 1917 Putnam Mar. 12, 1918 Gunning et a1 Jan. 11, 1927 Bochner May 31, 1927 Toepfert Nov. 29, 1927 Lawson Feb. 27, 1934 Creser Sept. 24, 1935 Millan et a1 Mar. 21, 1939 

